Whole lotta shakin goin on

[Tah2oe]

Shook the hell out of me this morning.


Recent Earthquakes in California and Nevada

== PRELIMINARY EARTHQUAKE REPORT ==
California Integrated Seismic Net
USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR
Version #3: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.

A light earthquake occurred at 4:42:22 AM (PDT) on Friday, July 20, 2007.
The magnitude 4.2 event occurred 4 km (2 miles) ENE of Oakland, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 4.2 - regional moment magnitude (Mw)
Time Friday, July 20, 2007 at 4:42:22 AM (PDT)
Friday, July 20, 2007 at 11:42:22 (UTC)
Distance from Oakland, CA - 4 km (2 miles) ENE (69 degrees)
Piedmont, CA - 4 km (3 miles) ESE (113 degrees)
Moraga, CA - 7 km (4 miles) SW (234 degrees)
Alameda, CA - 8 km (5 miles) NE (51 degrees)
Coordinates 37 deg. 48.4 min. N (37.807N), 122 deg. 11.3 min. W (122.188W)
Depth 5.8 km (3.6 miles)
Location Quality Excellent
Location Quality Parameters Nst=226, Nph=226, Dmin=3 km, Rmss=0.12 sec, Erho=0.1 km, Erzz=0.3 km, Gp=32.4 degrees
Event ID# nc40199209
Additional Information 2-degree map
Google Earth KML (Requires Google Earth.)
Topo map centered at earthquake (This link takes you offsite.)
ShakeMap shaking intensity maps
Did you feel it?
NCSN First Motion Mechanism 1
Waveforms
Waveforms for ShakeMap
Berkeley moment tensor solution
For more information, see http://quake.wr.usgs.gov/


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